Loans and other financial assets at amortized cost - Details of restricted due from banks (Details) - KRW (₩) ₩ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Restricted due from financial institutions [Line Items] | ||
| Total | ₩ 1,468,257 | ₩ 1,579,481 |
| Due from banks in local currency | ||
| Restricted due from financial institutions [Line Items] | ||
| Total | 414,008 | 316,280 |
| Due from banks in local currency | Others | ||
| Restricted due from financial institutions [Line Items] | ||
| Total | ₩ 248,704 | ₩ 77,835 |
| Reason of restriction | Reserve deposits | Reserve deposits |
| Counterparty | Korea Federation of Savings Bank and others | Korea Federation of Savings Bank and others |
| Due from banks in local currency | Securities trading | ||
| Restricted due from financial institutions [Line Items] | ||
| Total | ₩ 165,304 | ₩ 238,445 |
| Reason of restriction | Customer deposit refund reserve and futures trading margin and others | Customer deposit refund reserve and futures trading margin and others |
| Counterparty | Korea Exchange Co.,Ltd. and Korea Securities Finance Corporation and others | Korea Securities Finance Corporation |
| Due from banks in foreign currencies | ||
| Restricted due from financial institutions [Line Items] | ||
| Total | ₩ 1,054,249 | ₩ 1,263,201 |
| Due from banks in foreign currencies | Due from banks on demand | ||
| Restricted due from financial institutions [Line Items] | ||
| Total | ₩ 149,279 | ₩ 169,064 |
| Reason of restriction | Reserve deposits and others | Reserve deposits and others |
| Counterparty | National Bank of Cambodia and others | National Bank of Cambodia and others |
| Due from banks in foreign currencies | Due from banks on time | ||
| Restricted due from financial institutions [Line Items] | ||
| Total | ₩ 129,141 | ₩ 284 |
| Reason of restriction | Federal Reserve Discount Window | Usage deposits for fund settlement system and others |
| Counterparty | Toronto Dominion Bank, New York, and others | National Bank of Cambodia |
| Due from banks in foreign currencies | Others | ||
| Restricted due from financial institutions [Line Items] | ||
| Total | ₩ 775,829 | ₩ 1,093,853 |
| Reason of restriction | CSA collateral and others | CSA collateral and others |
| Counterparty | GOLDMAN SACHS INTL., LON and others | BNP-PARIBAS, PAR and others |